JPS6168521U - - Google Patents
Info
- Publication number
- JPS6168521U JPS6168521U JP15191584U JP15191584U JPS6168521U JP S6168521 U JPS6168521 U JP S6168521U JP 15191584 U JP15191584 U JP 15191584U JP 15191584 U JP15191584 U JP 15191584U JP S6168521 U JPS6168521 U JP S6168521U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- signal
- frequency
- coil
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 1
Description
第１図は本考案による双方向性フイルタの一実
施例の回路図、第２図は従来の双方向性フイルタ
の一例の回路図である。
Ａ…電力と通信信号が分離される方向、Ｂ…電
力と通信信号が結合される方向、Ｃ…端子、Ｃ１
〜Ｃ４…コンデンサ、ＤＦ１…方向性フイルタ、
Ｈ…（高域信号用の）端子、ＨＦ１…高域フイル
タ、Ｋ１，Ｋ２…（接続用の）端子、Ｌ…（低域
信号用の）端子、Ｌ１〜Ｌ４…コイル、ＬＦ１…
低域フイルタ、Ｐ…（電力用の）端子、ＰＳＦ１
…電力分離フイルタ、ＳＨ…高域信号、ＳＬ…低
域信号、ＳＰ…電力、Ｓ…信号（Ｓ＝ＳＨ＋ＳＬ
＋ＳＰ）。
FIG. 1 is a circuit diagram of an embodiment of a bidirectional filter according to the present invention, and FIG. 2 is a circuit diagram of an example of a conventional bidirectional filter. A... Direction in which power and communication signals are separated, B... Direction in which power and communication signals are combined, C... Terminal, C 1
~ C4 ...Capacitor, DF1 ...Directional filter,
H...terminal (for high frequency signal), HF1 ...high frequency filter, K1 , K2 ...terminal (for connection), L...terminal (for low frequency signal), L1 to L4 ...coil, LF 1 ...
Low-pass filter, P... (power) terminal, PSF 1
…power separation filter, SH…high frequency signal, SL…low frequency signal, SP…power, S…signal (S=SH+SL
+SP).
Claims (1)
域信号でなる通信信号に直流または商用周波数の
電力信号を重畳させ、同軸ケーブルを通して伝送
する双方向伝送方式に使用される双方向性フイル
タにおいて、 信号入出力用の端子と、該端子からの信号のう
ち高域信号のみを通過させる第１のコンデンサと
、該高域信号が出力される第１の端子と、前記信
号入出力用の端子からの信号のうち低域信号と電
力信号を通過させる第１のコイルと、該低域信号
および電力信号が出力される第２の端子と、該第
２の端子に現われる信号のうち電力信号のみを通
過させる第４のコイルと、該電力信号を取り出す
電力用の端子と、前記第１の端子と大地間に接続
され、前記入出力用の端子と第１の端子との間の
高域特性を最適にするインダクタンス値に設定さ
れた第２のコイルとを有する電力分離フイルタと
、 前記第１の端子と大地間に接続されて前記第２
のコイルと共に前記入出力用の端子と第１の端子
との間の停域特性を最適にするインダクタンス値
に設定された第３のコイルと、前記第１の端子に
現われる高域信号が高域波された後出力される
高域用の端子とを有し、前記第１のコンデンサお
よび第２のコイルと共に形成される高域フイルタ
、および前記第２の端子に現われる信号のうち低
域信号のみを通過させる第２のコンデンサと、該
低域信号が低域波された後出力される低域用の
端子とを有し、前記第１のコイルと共に形成され
る低域フイルタからなる方向性フイルタと、 で構成されることを特徴とする双方向性フイルタ
。[Claims for Utility Model Registration] Used in a bidirectional transmission system in which a DC or commercial frequency power signal is superimposed on a communication signal consisting of a high frequency signal and a low frequency signal with a frequency higher than the commercial frequency, and is transmitted through a coaxial cable. A bidirectional filter includes a terminal for inputting and outputting a signal, a first capacitor that passes only a high-frequency signal among the signals from the terminal, a first terminal to which the high-frequency signal is output, and a first capacitor that transmits the signal from the terminal. A first coil that passes a low frequency signal and a power signal among the signals from the input/output terminal, a second terminal to which the low frequency signal and the power signal are output, and a signal appearing at the second terminal. A fourth coil that passes only the power signal, a power terminal that takes out the power signal, and a fourth coil that is connected between the first terminal and the ground and that connects the input/output terminal and the first terminal. a second coil having an inductance value that optimizes high-frequency characteristics between the second coil and the second coil connected between the first terminal and the ground;
A third coil is set to an inductance value that optimizes the stopband characteristic between the input/output terminal and the first terminal, and the high frequency signal appearing at the first terminal is a high-frequency filter formed together with the first capacitor and the second coil, and a high-frequency terminal that outputs the signal after being waveformed, and only a low-frequency signal among the signals appearing at the second terminal; a directional filter consisting of a low-pass filter formed together with the first coil, having a second capacitor that allows the low-frequency signal to pass, and a low-frequency terminal to which the low-frequency signal is output after being converted into a low frequency signal; A bidirectional filter comprising: and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15191584U JPS6168521U (en) | 1984-10-08 | 1984-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15191584U JPS6168521U (en) | 1984-10-08 | 1984-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6168521U true JPS6168521U (en) | 1986-05-10 |
Family
ID=30710009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15191584U Pending JPS6168521U (en) | 1984-10-08 | 1984-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6344543U (en) * | 1986-09-09 | 1988-03-25 |
-
1984
- 1984-10-08 JP JP15191584U patent/JPS6168521U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6344543U (en) * | 1986-09-09 | 1988-03-25 |
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